Finding the Fourth Proportional to 17,680.26, 26,516.65 and 5,196.89

Step by Step Solution

1. Step 1: Write the proportion equation
   17,680.26 : 26,516.65 = 5,196.89 : x
2. Step 2: Convert to fraction form
   17,680.26/26,516.65 = 5,196.89/x
3. Step 3: Cross multiply
   17,680.26x = 26,516.65 × 5,196.89
4. Step 4: Simplify right side
   17,680.26x = 137,803,980.64
5. Step 5: Solve for x
   x = 137,803,980.64/17,680.26
6. Step 6: Final answer
   x = 7,794.23